[PATCH] aoe [1/3]: support multiple AoE listeners

Always clone incoming skbs, allowing other AoE listeners
to exist in the kernel.

Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/block/aoe/aoenet.c

@@ -92,18 +92,6 @@ mac_addr(char addr[6])
 	return __be64_to_cpu(n);
 }
 
-static struct sk_buff *
-skb_check(struct sk_buff *skb)
-{
-	if (skb_is_nonlinear(skb))
-	if ((skb = skb_share_check(skb, GFP_ATOMIC)))
-	if (skb_linearize(skb, GFP_ATOMIC) < 0) {
-		dev_kfree_skb(skb);
-		return NULL;
-	}
-	return skb;
-}
-
 void
 aoenet_xmit(struct sk_buff *sl)
 {
@@ -125,14 +113,14 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt,
 	struct aoe_hdr *h;
 	u32 n;
 
-	skb = skb_check(skb);
-	if (!skb)
+	skb = skb_share_check(skb, GFP_ATOMIC);
+	if (skb == NULL)
 		return 0;
-
+	if (skb_is_nonlinear(skb))
+	if (skb_linearize(skb, GFP_ATOMIC) < 0)
+		goto exit;
 	if (!is_aoe_netif(ifp))
 		goto exit;
-
-	//skb->len += ETH_HLEN;	/* (1) */
 	skb_push(skb, ETH_HLEN);	/* (1) */
 
 	h = (struct aoe_hdr *) skb->mac.raw;